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In this paper, we investigate the problems of Cauchy theory and exponential stability for the inhomogeneous Boltzmann equation without angular cut-off. We only deal with the physical case of hard potentials type interactions (with a…

偏微分方程分析 · 数学 2020-12-07 Frédéric Hérau , Daniela Tonon , Isabelle Tristani

Boundary effects are crucial for dynamics of dilute charged gases governed by the Vlasov-Poisson-Boltzmann (VPB) system. In this paper, we study the existence and regularity of solutions to the VPB system with soft potential in a bounded…

偏微分方程分析 · 数学 2021-11-18 Fucai Li , Yichun Wang

It is known that in the parameters range $-2 \leq \gamma <-2s$ spectral gap does not exist for the linearized Boltzmann operator without cutoff but it does for the linearized Landau operator. This paper is devoted to the understanding of…

偏微分方程分析 · 数学 2021-05-31 Duan Renjun , He Ling-Bing , Yang Tong , Yu-Long Zhou

The dynamics of dilute electrons can be modeled by the fundamental one-species Vlasov-Poisson-Boltzmann system which describes mutual interactions of the electrons through collisions in the self-consistent electrostatic field. For cutoff…

偏微分方程分析 · 数学 2015-06-19 Qinghua Xiao , Linjie Xiong , Huijiang Zhao

In this paper, we investigate a three-dimensional fluid-particle coupled model. % in whole space $\mathbb{R}^3$. This model combines the full compressible Navier-Stokes equations with the Vlasov-Fokker-Planck equation via the momentum and…

偏微分方程分析 · 数学 2024-08-27 Fucai Li , Jinkai Ni , Man Wu

This paper is concerned with the Vlasov-Poisson-Boltzmann system for plasma particles of two species in three space dimensions. The Boltzmann collision kernel is assumed to be angular non-cutoff with $-3<\gamma<-2s$ and $1/2\leq s<1$, where…

偏微分方程分析 · 数学 2015-06-17 Renjun Duan , Shuangqian Liu

We start with some global Maxwellian function $M$, which is a stationary solution (with the constant total density $\rho$) of the Boltzmann equation, and we denote the number of the corresponding space variables by $n$. The notion of…

数学物理 · 物理学 2011-06-17 Lev Sakhnovich

A Traveling Maxwellian $\mathcal{M} = \mathcal{M}(t, x, v)$ represents a traveling wave solution to the Boltzmann equation in the whole space $\R^3_x$(for the spatial variable). The primary objective of this study is to investigate the…

偏微分方程分析 · 数学 2023-09-06 Ling-Bing He , Wu-Wei Li

We obtain finite-time existence for the massless Boltzmann equation, with a range of soft cross-sections, in an FLRW background with data given at the initial singularity. In the case of positive cosmological constant we obtain long-time…

广义相对论与量子宇宙学 · 物理学 2020-01-29 Ho Lee , Ernesto Nungesser , Paul Tod

In this paper, we study the global existence and uniqueness, Gaussian lower bound, and moment estimates in the spatially homogeneous Boltzmann equation for Fermi-Dirac particles for hard potential ($0\leq \gamma\leq 2$) with angular cutoff…

偏微分方程分析 · 数学 2025-11-06 Gayoung An , Sungbin Park

We consider the non-cutoff Vlasov-Poisson-Boltzmann (VPB) system of two species with soft potential in the whole space $\mathbb{R}^3$ when an initial data is near Maxwellian. Continuing the work Deng [Comm. Math. Phys. 387, 1603-1654…

偏微分方程分析 · 数学 2024-02-08 Dingqun Deng

For the spatially homogeneous Boltzmann equation with cutoff hard potentials it is shown that solutions remain bounded from above, uniformly in time, by a Maxwellian distribution, provided the initial data have a Maxwellian upper bound. The…

偏微分方程分析 · 数学 2007-05-23 I. M. Gamba , V. Panferov , C. Villani

Motivated by the open problem of large-data global existence for the non-cutoff Boltzmann equation, we introduce a model equation that in some sense disregards the anisotropy of the Boltzmann collision kernel. We refer to this model…

偏微分方程分析 · 数学 2024-07-16 Stanley Snelson

In this paper, we focus on the existence of strong solutions for the Cauchy problem of the three-dimensional Landau-Lifshitz-Slonczewski equation. We construct a new combination of Bourgain space and Lebesgue space where linear and…

偏微分方程分析 · 数学 2023-06-06 Chenlu Zhang , Huaqiao Wang

We study the Boltzmann equation for a space-homogeneous gas of inelastic hard spheres, with a diffusive term representing a random background forcing. Under the assumption that the initial datum is a nonnegative $L^2$ function, with bounded…

偏微分方程分析 · 数学 2009-11-10 Irene M. Gamba , Vladislav Panferov , Cedric Villani

We consider a time-fractional parabolic equation of doubly nonlinear type, featuring nonlinear terms both inside and outside the differential operator in time. The main nonlinearities are maximal monotone graphs, without restrictions on the…

偏微分方程分析 · 数学 2025-08-20 Goro Akagi , Giacomo Enrico Sodini , Ulisse Stefanelli

We prove that the viscous Burgers equation has a globally defined smooth solution in all dimensions provided the initial condition and the forcing term are smooth and bounded together with their derivatives. Such solutions may have infinite…

偏微分方程分析 · 数学 2015-10-09 Jeremie Unterberger

We show that deletion of the loss part of the collision term in all physically relevant versions of the Boltzmann equation, including the relativistic case, will in general lead to blowup in finite time of a solution and hence prevent…

数学物理 · 物理学 2011-11-09 Hakan Andreasson , Simone Calogero , Reinhard Illner

We consider the Einstein-Boltzmann system for massless particles in the Bianchi I space-time with scattering cross-sections in a certain range of soft potentials. We assume that the space-time has an initial conformal gauge singularity and…

广义相对论与量子宇宙学 · 物理学 2024-08-21 Ho Lee , Ernesto Nungesser , John Stalker , Paul Tod

We study the Boltzmann equation with external forces, not necessarily deriving from a potential, in the incompressible Navier-Stokes perturbative regime. On the torus, we establish local-in-time, for any time, Cauchy theories that are…

数学物理 · 物理学 2023-02-08 Marc Briant , Arnaud Debussche , Julien Vovelle